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UNITED siIATEs vPATENT oFFIoE.

i WILLIAM H. PULVER, OF" TROY, NEW YORK.

FIRE-GRATE.

Specification of Letters Patent No. 5,232, dated August 7, 1847.

To all whom t may concern Be it known that I, WILLIAM H. PULVER, of thecity of Troy, in the county of Rensselaer and State of New York, haveinvented a new and useful Machine tov Facilitate the Consumption of Fuelin All Kinds of Furnaces; and I do hereby declare that the fol`` lowingis a full, clear, and exact description of the construction andoperation of the same, reference being had to the annexed drawing,making a part of this specification, in which- Figure 1 is the plan orhorizontal projection. Fig. 2, is the elevation or vertical projectionand Fig. 3, a transverse section.

The dotted lines, in the drawing represent the inner walls or side ofthe furnace, fire place, stove', &c. The grate is constructed by bars,A, A, running transversely and dividing it into independentsections.These bars are to be cast, with the connecting parts c, c, and beingopen between said connectingI parts. They are fixed in a side plate, bythe journals a, a, onwhich they oscillate.

The bars, or teeth, b, are cast with, or aiiixed to, the transverse barsA, A, and interlock with each other as represented.

The form of the teeth is lnot material; those in the drawing are madeoblong and flat.

The oscillations of the grate are made by the action of the lever B,acting on the rock shaft C, (see Fig. 3,) vand throughv that, by l Y.

rlhe lever may operate in the center, as iny the drawing, or at t-heside or rear.

What I claim as my invention, and desire to secure by- Letters Patent,is-

rlhe manner of dividing the grate intov compartments by means ofserrated or interlacing bars or teeth, havingsan oscillatoryv orsemi-revolving motion with the transverse bars, of which they form apart, orto which they are united; and this in combina# t-ion with therock-shaft, through which the .s f Y said motion is propagated, from thelever.

w, II. PULVER.`

Witnesses:

H.-A. WILSON, ARCHIBALD BULL.

